Electric ceramic stove

Abstract

The utility model belongs to the technical field of household appliances, and discloses an electric ceramic cooker which comprises a bottom shell, a panel, a containing cavity defined by the bottom shell and the panel together, a heating disc, a temperature measuring module, a capacitance detecting module and a thermocouple, the heating disc, the temperature measuring module, the capacitance detecting module and the thermocouple are arranged in the containing cavity, and the thermocouple is attached to the lower surface of the panel. The thermocouple is electrically connected with the temperature measurement module through a first electric wire and used for detecting the temperature of the position where the thermocouple is attached to the panel, and the thermocouple is electrically connected with the capacitance detection module through a second electric wire to form a cookware detection circuit used for detecting the capacitance change of the position where the thermocouple is attached to the panel. According to the technical scheme, temperature and pot existence detection is achieved through the thermocouple, only the thermocouple needs to be installed, capacitance parts are omitted, the number of parts is reduced, the detection assembly is simpler in structure and more convenient to install, and meanwhile the product cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to an electric ceramic stove. Background Art

[0002] In order to avoid damage to parts caused by excessive heat, existing electric ceramic stoves generally have temperature detection, and the temperature of the pot is detected by setting a thermocouple under the pot panel. At the same time, the pot is heated by radiation from the electric ceramic stove. When the pot is removed during the cooking process, the strong radiation causes the temperature of the surrounding objects to rise instantly, which can easily cause damage to the objects. When the human body is close, it is hot and uncomfortable, so it is generally equipped with a pot detection function; generally, a capacitor is set under the panel to detect the presence of the pot. The temperature detection structure is specifically a cooking utensil with precise temperature measurement disclosed in the prior art CN201821118274.0, in which a temperature sensor is provided between the insulation component and the panel, and the temperature sensor is tightly fitted to the lower end surface of the panel. The pot has a detection structure, specifically, an electric ceramic stove disclosed in the prior art CN202021207359.3, including a shell and a heating plate installed in the shell, the shell includes a lower cover and an upper cover installed on the lower cover, the upper cover surface is provided with a placement area for placing pots, a conductive element is provided below the placement area, and a touch panel is also provided in the shell, the touch panel is provided with a touch chip, and the touch chip is electrically connected to the conductive element. However, in the above two technical solutions, it is necessary to separately set up thermocouples and capacitors to detect temperature and pot presence, and the detection component structure is complex and inconvenient to install. Utility Model Content

[0003] The utility model provides an electric ceramic stove, which has a simpler structure and is more convenient to install, in order to overcome the shortcomings of the electric ceramic stove in the prior art that a thermocouple and a capacitor need to be respectively provided for temperature and pot presence detection, and the detection component has a complex structure and is inconvenient to install.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an electric ceramic stove, comprising a bottom shell, a panel, a accommodating cavity surrounded by the bottom shell and the panel, and a heating plate, a temperature measuring module, a capacitance detection module and a thermocouple arranged in the accommodating cavity, wherein the thermocouple is arranged on the lower surface of the panel, the thermocouple is electrically connected to the temperature measuring module through a first wire, and is used to detect the temperature of the position where the thermocouple is arranged on the panel, and the thermocouple is electrically connected to the capacitance detection module through a second wire, so as to form a pot detection circuit for detecting the capacitance change of the position where the thermocouple is arranged on the panel.

[0005] In the above technical solution, the thermocouple is electrically connected to the temperature measuring module through the first wire to detect the temperature of the electric ceramic stove; the thermocouple is electrically connected to the capacitance detection module through the second wire, and the capacitance value of the thermocouple is different when the pot is placed on the panel and when it is not placed on the panel. The capacitance detection module detects the change in the capacitance of the thermocouple to detect the presence or absence of the pot. In the above technical solution, the thermocouple is used to detect both the temperature and the presence or absence of the pot. Only the thermocouple needs to be installed, which eliminates the capacitor and reduces the number of parts. The detection component structure is simpler and the installation is more convenient, which can also reduce the product cost.

[0006] The utility model is further configured as follows: an elastic member is provided in the accommodating cavity, the thermocouple is slidably connected to the bottom shell or the heating plate, one end of the elastic member is connected to the thermocouple, and the other end of the elastic member is connected to the bottom shell or the heating plate, so that the upper end of the thermocouple is in close contact with the lower surface of the panel.

[0007] In the above technical scheme, the elastic part is connected to the thermocouple, so the position of the thermocouple can be adaptively adjusted so that the upper end of the thermocouple can be close to the lower surface of the panel, and the data detected by the thermocouple is more accurate, thereby improving the accuracy of thermocouple temperature detection and pot temperature detection; at the same time, the adaptive adjustment effect produced by the elastic deformation of the elastic part can allow a certain error between the thermocouple and the panel during production and installation, which is conducive to reducing the difficulty of production and installation.

[0008] The utility model is further configured as follows: the thermocouple passes through the heating plate from top to bottom, the connection point between the first wire and the thermocouple is located below the heating plate, and the connection point between the second wire and the thermocouple is located below the heating plate.

[0009] In the above technical solution, the thermocouple passes through the heating plate from top to bottom, so that the thermocouple is in the heating area of ​​the pot, and the data detected by the thermocouple is more accurate, thereby improving the accuracy of thermocouple temperature detection and pot detection. The connection point between the first wire and the second wire and the thermocouple is located below the heating plate, away from the heating direction of the pot, which can reduce the damage of high temperature to the first wire and the second wire.

[0010] The utility model is further configured such that: the horizontal projection of the thermocouple is located within the horizontal projection range of the heating disk.

[0011] In the above technical solution, the horizontal projection of the thermocouple is within the horizontal projection range of the heating plate, so that the thermocouple is located in the area where the cookware is heated. The data detected by the thermocouple is more accurate, which can improve the accuracy of thermocouple temperature detection and cookware presence / absence detection.

[0012] The utility model is further configured as follows: the upper end surface of the heating disk is closely attached to the lower surface of the panel, and the thermocouple is arranged at the center position of the heating disk.

[0013] In the above technical solution, the thermocouple is arranged at the center of the heating plate, and the general pot is placed at the center of the heating plate, and the data detected by the thermocouple is more accurate, so the accuracy of thermocouple temperature detection and pot detection can be improved. Of course, the upper end surface of the heating plate is close to the lower surface of the panel, which is conducive to improving the heating efficiency.

[0014] The utility model is further configured such that: the horizontal projection of the capacitance detection module is located outside the horizontal projection range of the heating plate.

[0015] In the above technical solution, the horizontal projection of the capacitance detection module is located outside the horizontal projection range of the heating plate, which can avoid overlapping with the heating position of the cookware and reduce the influence of heat on the capacitance detection module.

[0016] The utility model is further configured as follows: the material of the panel is a ceramic plate or a crystal plate.

[0017] In the above technical solution, the ceramic plate or crystal plate has high hardness and good high temperature resistance, and the panel is made of a ceramic plate or a crystal plate, which is less prone to damage.

[0018] The utility model is further configured as follows: a touch module with touch buttons is arranged in the accommodating cavity, the touch module is attached to the bottom of the panel, and the capacitance detection module is built in the touch module.

[0019] In the above technical solution, the touch buttons of the electric ceramic stove are generally capacitive buttons, so the touch module is built with a capacitive detection module. The capacitive detection module built into the touch module can be used to detect whether the pot is present, so that the pot presence detection and the touch module share the capacitive detection module. Only the touch module needs to be installed, eliminating one capacitive detection module. The detection component structure is simpler, the installation is more convenient, and the product cost can also be reduced.

[0020] The beneficial effects of the utility model are: the temperature and the presence or absence of the pot can be detected simultaneously by the thermocouple, only the thermocouple needs to be installed, the capacitor is omitted, the number of parts is reduced, the detection component structure is simpler, the installation is more convenient, and the product cost can also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 yes Figure 1 Partial view of point A1 in the middle.

[0023] In the figure: bottom shell 1; panel 2; accommodating cavity 3; heating plate 31; temperature measuring module 32; capacitance detection module 33; second wire 331; thermocouple 34; first wire 341; elastic member 35. DETAILED DESCRIPTION

[0024] In the description of this embodiment, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the utility model. In addition, if the terms "first", "second", and "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] like Figure 1 to Figure 2 As shown, an electric ceramic stove includes a bottom shell 1, a panel 2, a receiving cavity 3 surrounded by the bottom shell 1 and the panel 2, and a heating plate 31, a temperature measuring module 32, a capacitance detection module 33 and a thermocouple 34 arranged in the receiving cavity 3. The thermocouple 34 is attached to the lower surface of the panel 2, and the thermocouple 34 is electrically connected to the temperature measuring module 32 through a first wire 341, and is used to detect the temperature of the position where the thermocouple 34 is attached to the panel 2. The thermocouple 34 is electrically connected to the capacitance detection module 33 through a second wire 331, forming a pot detection circuit for detecting the capacitance change of the position where the thermocouple 34 is attached to the panel 2.

[0027] In this embodiment, the thermocouple 34 is electrically connected to the temperature measuring module 32 through the first wire 341 to detect the temperature of the electric ceramic stove; the thermocouple 34 is electrically connected to the capacitance detection module 33 through the second wire 331. The capacitance value of the thermocouple 34 is different when the pot is placed on the panel 2 and when it is not placed. The capacitance detection module 33 detects the change in the capacitance of the thermocouple 34 to detect the presence or absence of the pot. In this embodiment, the temperature and the presence or absence of the pot are detected at the same time by the thermocouple 34. Only the thermocouple 34 needs to be installed, the capacitance component is omitted, the number of parts is reduced, the detection component structure is simpler, the installation is more convenient, and the product cost can also be reduced.

[0028] In this embodiment, a touch module with touch buttons is provided in the accommodating cavity 3, and the touch module is attached to the bottom of the panel, and the touch module has the capacitance detection module 33 built in. The touch buttons of the electric ceramic stove are generally capacitive buttons, so the touch module has a built-in capacitance detection module 33, and the capacitance detection module 33 built in the touch module can be used to detect whether the pot is present, so that the pot presence detection and the touch module share the capacitance detection module 33, and only the touch module needs to be installed, eliminating one capacitance detection module 33, and the detection component structure is simpler, the installation is more convenient, and the product cost can also be reduced. Among them, the general case is set on the panel, so the touch module is attached to the bottom of the panel.

[0029] Of course, in other embodiments, a separate capacitance detection module 33 may be independently provided to monitor the presence or absence of a pot.

[0030] Specifically, Figure 1 to Figure 2 As shown, an elastic member 35 is provided in the accommodating cavity 3, and the thermocouple 34 is slidably connected to the heating plate 31. One end of the elastic member 35 is connected to the thermocouple 34, and the other end of the elastic member 35 is connected to the heating plate 31, so that the upper end of the thermocouple 34 is in close contact with the lower surface of the panel 2. By connecting the elastic member 35 to the thermocouple 34, the position of the thermocouple 34 can be adaptively adjusted, so that the upper end of the thermocouple 34 can be in close contact with the lower surface of the panel 2, and the data detected by the thermocouple 34 is more accurate, thereby improving the accuracy of the temperature detection of the thermocouple 34 and the accuracy of the pot having no detection; at the same time, the adaptive adjustment effect produced by the elastic deformation of the elastic member 35 can allow a certain error between the thermocouple 34 and the panel 2 during production and installation, which is conducive to reducing the difficulty of production and installation.

[0031] Of course, in other embodiments, the thermocouple 34 may also be slidably connected to the bottom shell 1 , and the other end of the elastic member 35 is connected to the bottom shell 1 .

[0032] Specifically, in this embodiment, the elastic member 35 is a bent sheet metal member. Of course, in other embodiments, the elastic member 35 can also be a compression spring, a torsion spring, an elastic material member, or other suitable elastic member 35 .

[0033] Specifically, Figure 1 to Figure 2As shown, the thermocouple 34 passes through the heating plate 31 from top to bottom, the connection point between the first wire 341 and the thermocouple 34 is located below the heating plate 31, and the connection point between the second wire 331 and the thermocouple 34 is located below the heating plate 31. The thermocouple 34 passes through the heating plate 31 from top to bottom, so that the thermocouple 34 is in the pot heating area, and the data detected by the thermocouple 34 is more accurate, thereby improving the accuracy of the temperature detection of the thermocouple 34 and the detection of the pot. The connection point between the first wire 341 and the second wire 331 and the thermocouple 34 is located below the heating plate 31, away from the heating direction of the pot, which can reduce the damage of the first wire 341 and the second wire 331 to the high temperature.

[0034] In addition, if Figure 1 to Figure 2 As shown, the first wire 341 and the second wire 331 are connected to the lower end of the thermocouple 34. The thermocouple 34 is electrically connected to the temperature measurement module 32 through the two first wires 341. The first wire 341 and the second wire 331 are all located below the heating plate 31.

[0035] Specifically, a heat insulation layer is also provided in the accommodating cavity 3. The heat insulation layer is arranged between the heating plate 31 and the lower end components of the heating plate 31 to protect the lower end components of the heating plate 31 and prevent the high temperature of the heating plate 31 from damaging the lower end components of the heating plate 31. In particular, the first wire and the second wire will not be damaged when they are close to the heating plate. The heat insulation layer can be made of heat insulation materials such as alumina ceramics and zirconia ceramics.

[0036] Of course, in order to further protect the heat dissipation protection components, a heat dissipation fan is also provided in the accommodating cavity 3, and a heat dissipation channel is provided on the shell to discharge the hot air in the accommodating cavity 3.

[0037] Specifically, Figure 1 As shown, the horizontal projection of the thermocouple 34 is within the horizontal projection range of the heating plate 31. The thermocouple 34 is located in the area where the pot is heated, and the data detected by the thermocouple 34 is more accurate, which can improve the accuracy of the temperature detection of the thermocouple 34 and the detection of the pot.

[0038] Specifically, Figure 1 As shown, the upper end surface of the heating plate 31 is close to the lower surface of the panel 2, and the thermocouple 34 is arranged at the center of the heating plate 31. The thermocouple 34 is arranged at the center of the heating plate 31, and the general pot is placed at the center of the heating plate 31. The data detected by the thermocouple 34 is more accurate, so the accuracy of the temperature detection of the thermocouple 34 and the detection of the pot can be improved. Of course, the upper end surface of the heating plate 31 is close to the lower surface of the panel 2, which is conducive to improving the heating efficiency.

[0039] Specifically, Figure 1As shown, the horizontal projection of the capacitance detection module 33 is outside the horizontal projection range of the heating plate 31. The horizontal projection of the capacitance detection module 33 is outside the horizontal projection range of the heating plate 31, which can avoid overlapping with the heating position of the pot and reduce the influence of heat on the capacitance detection module 33.

[0040] Specifically, the material of the panel 2 is a ceramic plate. Of course, it is understandable that in other embodiments, the material of the panel 2 can also be a crystal plate or other materials. Ceramic plates or crystal plates have high hardness and good high temperature resistance. The material of the panel 2 is a ceramic plate or a crystal plate, which is less likely to be damaged. At the same time, the ceramic plate or the crystal plate has good thermal conductivity, which is conducive to conducting the heat of the heating plate 31 to the pot.

[0041] Specifically, the bottom shell 1 may be made of suitable materials such as PVC, PP, ABS and recycled plastic.

[0042] The principle of thermocouple 34 detecting whether there is a pot or not: a capacitance value is formed between the pot, panel 2 and thermocouple 34, and the capacitance value is different if there is a pot or not; when the capacitance value is greater than the set capacitance value when there is a pot, it is determined that there is a pot and the current function is maintained; when there is no pot, the capacitance value is less than the set capacitance value, it is determined that there is no pot, heating is stopped, and a prompt is given that there is no pot.

[0043] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.

Claims

1. An electric ceramic stove, comprising a bottom shell, a panel, a receiving cavity surrounded by the bottom shell and the panel, and a heating plate, a temperature measuring module, a capacitance detection module and a thermocouple arranged in the receiving cavity, wherein the thermocouple is attached to the lower surface of the panel, wherein: The thermocouple is electrically connected to the temperature measuring module via a first wire, and is used to detect the temperature of the position where the thermocouple is attached to the panel. The thermocouple is electrically connected to the capacitance detection module via a second wire, and forms a pot detection circuit for detecting the capacitance change at the position where the thermocouple is attached to the panel.

2. An electric ceramic stove according to claim 1, characterized in that: An elastic member is provided in the accommodating cavity, the thermocouple is slidably connected to the bottom shell or the heating plate, one end of the elastic member is connected to the thermocouple, and the other end of the elastic member is connected to the bottom shell or the heating plate, so that the upper end of the thermocouple is in close contact with the lower surface of the panel.

3. An electric ceramic stove according to claim 1, characterized in that: The thermocouple passes through the heating plate from top to bottom, the connection point between the first wire and the thermocouple is located below the heating plate, and the connection point between the second wire and the thermocouple is located below the heating plate.

4. An electric ceramic stove according to claim 1, 2 or 3, characterized in that: The horizontal projection of the thermocouple is located within the horizontal projection range of the heating disk.

5. An electric ceramic stove according to claim 4, characterized in that: The upper end surface of the heating plate is in close contact with the lower surface of the panel, and the thermocouple is arranged at the center of the heating plate.

6. An electric ceramic stove according to claim 1, 2 or 3, characterized in that: The horizontal projection of the capacitance detection module is outside the horizontal projection range of the heating plate.

7. An electric ceramic stove according to claim 1, 2 or 3, characterized in that: The panel is made of a ceramic plate or a crystal plate.

8. An electric ceramic stove according to claim 1, 2 or 3, characterized in that: A touch control module with touch buttons is arranged in the accommodating cavity. The touch control module is attached below the panel and has the capacitance detection module built therein.

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